[prs]

Charging for premium features - Sure. But the basic version will remain free according to the Trello Guide.

Free... for how long?

Trello is free forever. We may add pay-only features in the future, but everything that's free today will be free tomorrow and forever. Also, we'll not make a for-pay feature that forces you to compromise on privacy, security, or portability. Those are built-in. [...] Trello is free.

https://trello.com/guide

[eliben]

Forever is such a strong word... What if Fogcreek goes bust one day? I would actually prefer companies to charge money for such services, it gives greater confidence in them in the long run. Even a measly $10/year per user is a great business model if you have 1M users.

[tnorthcutt]

I agree with you, although to be fair, they likely wouldn't have 1M users if they charged.